Vạch chỉ thị: 2 to 30 ppm
Thang đo:
+ 2 ~ 30 ppm, bơm 4 lần
+ 30 ~ 75 ppm, bơm 2 lần
Thời gian lấy mẫu: 3 phút mỗi lần bơm
Chuyển đổi màu: Pale Yellow → Yellow
Hệ số biến đổi: 10% (2 ~ 10 ppm), 5% (10 ~ 30 ppm)
Số ống trong hộp: 10
Dùng thích hợp với bơm: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
3 minutes per pump stroke |
| Detecting Limit |
0.2 ppm (n=4) |
| Colour Change |
Pale Yellow → Yellow |
| Reaction Principle |
Cyclohexanone reacts with 2,4-dinitrophenylhydrazine to form dinitropnenylhydrazone to produce yellow in colour. |
| Coefficient of Variation |
10% (for 2 to 10 ppm), 5% (for 10 to 30 ppm) |
| Shelf Life |
2 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Furfural |
1.0 |
4 |
2 to 30 ppm |
| Diacetone alcohol |
by scale |
2 |
2.5 to 100 ppm |
| Isophorone |
1.0 |
8 |
2 to 30 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 20ppm(2014) |
50ppm(2014) |
1.1 to 9.4% |
